When ever I unload the chunk that my turbine is in and return, the turbine starts spinning down because it is not receiving any steam from my reactor. The reactor is right up against the turbine (no pipes involved). The only way I have found to fix this is to destroy the turbine coolant ports, (not the reactor's) and then replace them and reconstruct the multiblock. This solves the problem but is fairly annoying to do every time I leave the chunk. The part that confuses me is that I have two turbines and it only happens to the one. I have tried removing all the insides and facing them the other way, but no luck.



Some images showing the setup of both the broken and working turbine

What sort of transport are you using to move steam into the turbines?

The turbine coolant port is right up against the reactor coolant port, there are no tubes.

Hm. Would you mind trying to use a tesseract as your fluid transport, just as a test?

I suspect what's happening is that the reactor's fluid output port isn't detecting that a fluid container is being placed next to it, and therefore stops auto-emitting fluids.

Also, for the turbine that works fine, where is the reactor located? Beneath the turbine?

If i see it right, then the turbines are located next to the reactor, the only difference is the orientation.

I rebuilt the turbine 3 blocks away from the reactor and used tesseracts and attempted to replicate the bug, and I believe it is fixed! Thanks.

Both of the turbines are set up the same way with the coolant ports being right next to the reactor coolant port. The only difference is the casing, one has more glass then the other

"Fixed." Using tesseracts is a workaround, but I'm pretty sure you've uncovered an actual bug with chunk boundaries and reactor coolant ports. I'll flag this for investigation.